India: Vedanta-Sterlite Copper has met with the Kerala state government to discuss the use of copper slag in road building. The copper subsidiary of Vedanta wants to use copper slag as a partial replacement for river sand and manufactured sand in the construction of roads in the state, according to the Times of India newspaper. The Bureau of Indian Standards (BIS) has approved the usage of copper slag in various grades of concrete as a partial substitute for sand. Vedanta-Sterlite’s Tutucorin plant is currently produces 60,000 - 70,000t/yr of slag, none of which is used.